Liquid to be used as heat transferring medium



- No Drawing.

-Patented May 19, 1931 UNITED STATES.

WILLIAM STOREY SHERMAN, OF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- PATENT OFFICE MENTS, TO GENERAL FRIGHEATONE CO. INCL, A. CORPORATION OF NEW YORK LIQUID TO BE USED AS HEAT TRANSFERRIN'G MEDIUM The object of my invention is to provide a liquid adapted for the above purposes, which has a very wide range between'its boiling point and freezing point, and which will retain its fluidity without any great increase in viscosity, and without any substantial decomposition in the range of temperatures between its boiling point and freezing point.

The Ol)]6(317 of my invention is, furthermore, to provide such a liquid which is harmless in use, both to ordinary apparatus used in heating operations, as well as to the operators engaged in work in connection therewith, and which is also substantially odorless. Again, the object of my invention is'to provide a liquid of the above character with which very high temperatures may be attained without the necessity of increasing the pressure above the atmospheric pressure. By this means, high temperatures may be attained without the very high pressures which would be neces sary if steam were used in securing the temperatures attained by the use of the liquid referred to. Again, the liquid constituting my invention will last indefinitely, substantially without change, except for a slight darkening of color. The object of my invention is, therefore, to provide a liquid with which such high temperatures may be attained for heatmg purposes that will enable the liquid tobe supplied at very considerable distances from the source of heat, inasmuch as the high initial temperatures in the liqu d will enable the same to be conveyed long dlS.

' tances to apply the required heating efiect',

notwithstanding the inevitable heat losses which occur,.due to the distance to which the I liquid is supplied. This is of special importance when heating large buildings, or supplying the liquid to distant parts of 1ndustrial plants. Similar efiects' are obtained with. the said 1i uid when used as a cooling medium, due to t e very low temperatures attainable therewith.

Applicat ion filed January 9, 1930. Serial No. 419,538.

The liquids forming the subject of this invention may be used in connection with the heating and cooling systems forming the'subject of my application for Letters Patent upon heating and cooling system, Serial Number 356,523, filed April 19, 1929, and ap paratus for heatin and cooling, Serial N umber 419,534, filed anuary 9, 1930.

While my invention is capable of embodiment in many different forms, I have de scribed only certain embodiments thereof hereinafter. 5

For example, I may provide for heating purposes a liquid comprising 100 parts by volume of diethyleneglycol CH2.OH.CH2.O.CH2.CH2.OH

which may contain 1% of water and 5% thereof by volume of a solution comprising 2 parts by volume of boiled linseed oil and 1 These are mixed part by volume of acetone.

together while agitating the same. This amount of water is merely present as an impurity and need not be present. This liquid has a boiling point of approximately 495 F. It'will be understood, also, that the amount of boiled linseed voil may be increased considerably up to 10% by volume, or higher, or

even as high as 25% by volume, in which event the boiling point will be considerably over 500 F. Also, the acetone may be increased or decreased considerably, if desired. Furthermore, any other mutual solvent of the diethyleneglycol and'the linseed oil may be used instead of acetone, as for instance,

ether. I have found, furthermore,that the diethyleneglycol when present with the linseed oil substantially prevents the carbonization of the linseed oil, which would otherwise take placeif the latter were subjected alone to these high temperatures. It will be understood, also, that ordinary linseed oil may be used in this connection, although not as effectively as boiled linseed oil.

When the liquid is to-be used for cooling, preferably I add an increased amount of water, as for example, an amount of water equal to 40% of the above by volume. This liquid will then have a freezing point below minus F. It will be understood, however, that the water may be considerably varied from the above figures.

The use of theseliquids, therefore, provides such a wide range of temperatures as to enable them to be supplied to very great distances from the source of heat, or the source of cooling, while still attaining the desired high and low temperatures at such distances, inasmuch as such a wide range of temperatures permits the very considerable losses due to heat radiation in transit, while still attaining the desired temperatures at a distance. As above indicated, this enables the liquid to be used for effective heating and cooling at high temperatures at a distance both in industrial installations, as well as in dwellin s of various types.

WVhile I ave described my invention above in detail, I wish it to be understood that many changes may be made therein without departing from the spirit of the same.

I claim:

1. A heat transferring liquid comprising diethyleneglycol, linseed oil and a mutual solvent thereof.

2. A heat transferring liquid comprising diethyleneglycol, boiled linseed oil and a mutual solvent thereof.

'3. A heat transferring hquid comprising diethyleneglycol, linseed oil and acetone.

4. A heat transferrin diethyleneglycol, boile acetone.

5. A heat transferring liquid comprising diethyleneglycol, linseed oil, a mutual solvent thereof and Water.

6. A heat transferring liquid comprising diethyleneglycol, boiled linseed oil, a mutual solvent thereof and water.

7. A heat transferring liquid comprising diethyleneglycol, linseed oil, acetone and water.

8. A heat transferring liquid comprising diethyleneglycol, boiled linseed oil, acetone and water.

9. A heat transferring liquid com rising approximately parts by volume 0 diethy eneglycol, containing 1% by volume of water, approximately 5% thereof by volume of a solution containing 2 arts by volume of boiled linseed oil 1 party volume of acetone and ap roximately-40% of the above by volume o Water. Y

WILLIAM STOREY SHERMAN.

liquid comprising linseed oil and 

